Quote:
Originally Posted by Camelopardalis
I was using ISO1600 as that is reputed to be the signal to noise sweet spot for that sensor. Anything more than 2 seconds and I couldnt separate the trapezium stars, which are already a challenge with the little scope and chunky pixels 
Given you're using the LP filter, if your image is brightening it there could well be a good signal component to it. Longer exposures do tend to look quite bright on the camera screen, but it all gets dialled back during stacking. |
I had a look at the 30 second subs and the trapezium stars are clearly separated, but still bloated from over exposure. The detail in the core is a touch more, but not much more. I used live view to focus the stars, perhaps i should use FWHM to get it dialled in precisely using backyard EOS or some other software. Or perhaps ensure the minimal exposure on live view and visually get the smallest star possible. And then of course field rotation was probably giving me an issue due to bad PA.
so many possibilities!
